EP2061752A1 - Verfahren zur herstellung von alkali- oder erdalkalimetalltricyanomethaniden - Google Patents
Verfahren zur herstellung von alkali- oder erdalkalimetalltricyanomethanidenInfo
- Publication number
- EP2061752A1 EP2061752A1 EP07801696A EP07801696A EP2061752A1 EP 2061752 A1 EP2061752 A1 EP 2061752A1 EP 07801696 A EP07801696 A EP 07801696A EP 07801696 A EP07801696 A EP 07801696A EP 2061752 A1 EP2061752 A1 EP 2061752A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alkaline earth
- alkali
- earth metal
- tricyanomethanide
- acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910052784 alkaline earth metal Inorganic materials 0.000 title claims abstract description 56
- 150000001342 alkaline earth metals Chemical class 0.000 title claims abstract description 35
- 150000001340 alkali metals Chemical class 0.000 title claims abstract description 25
- 229910052783 alkali metal Inorganic materials 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 238000000034 method Methods 0.000 claims description 31
- 239000003513 alkali Substances 0.000 claims description 24
- CXERBOODJDWFQL-UHFFFAOYSA-N 2,2-dicyanoethenylideneazanide Chemical compound [N-]=C=C(C#N)C#N CXERBOODJDWFQL-UHFFFAOYSA-N 0.000 claims description 18
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 claims description 14
- JMANVNJQNLATNU-UHFFFAOYSA-N glycolonitrile Natural products N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 claims description 14
- 239000002585 base Substances 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- CUONGYYJJVDODC-UHFFFAOYSA-N malononitrile Chemical compound N#CCC#N CUONGYYJJVDODC-UHFFFAOYSA-N 0.000 claims description 11
- 239000002253 acid Substances 0.000 claims description 10
- QPJDMGCKMHUXFD-UHFFFAOYSA-N cyanogen chloride Chemical group ClC#N QPJDMGCKMHUXFD-UHFFFAOYSA-N 0.000 claims description 10
- -1 cyanogen halide Chemical class 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 9
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- 150000004820 halides Chemical class 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 5
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- 229910000272 alkali metal oxide Inorganic materials 0.000 claims description 3
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 claims description 2
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 claims description 2
- 229910001854 alkali hydroxide Inorganic materials 0.000 claims description 2
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 claims description 2
- 229910052788 barium Inorganic materials 0.000 claims description 2
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052791 calcium Inorganic materials 0.000 claims description 2
- 239000011575 calcium Substances 0.000 claims description 2
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 239000011777 magnesium Substances 0.000 claims description 2
- 150000007522 mineralic acids Chemical class 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 39
- 239000000243 solution Substances 0.000 description 22
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 15
- 235000011121 sodium hydroxide Nutrition 0.000 description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 10
- LOYHZHALCDOXIK-UHFFFAOYSA-N sodium;methanetricarbonitrile Chemical compound [Na+].N#C[C-](C#N)C#N LOYHZHALCDOXIK-UHFFFAOYSA-N 0.000 description 9
- 239000000047 product Substances 0.000 description 7
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000011541 reaction mixture Substances 0.000 description 5
- 239000000725 suspension Substances 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000007853 buffer solution Substances 0.000 description 4
- ATDGTVJJHBUTRL-UHFFFAOYSA-N cyanogen bromide Chemical compound BrC#N ATDGTVJJHBUTRL-UHFFFAOYSA-N 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000001953 recrystallisation Methods 0.000 description 4
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- ZKJPYQKGNUBNOA-UHFFFAOYSA-N potassium;2,2-dicyanoethenylideneazanide Chemical compound [K+].N#C[C-](C#N)C#N ZKJPYQKGNUBNOA-UHFFFAOYSA-N 0.000 description 3
- VCCMHPFGPGQTGQ-UHFFFAOYSA-N silver;2,2-dicyanoethenylideneazanide Chemical compound [Ag+].N#C[C-](C#N)C#N VCCMHPFGPGQTGQ-UHFFFAOYSA-N 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000012043 crude product Substances 0.000 description 2
- 239000012973 diazabicyclooctane Substances 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- UZQWVBVSXAWRJC-UHFFFAOYSA-N lithium methanetricarbonitrile Chemical compound [Li+].N#C[C-](C#N)C#N UZQWVBVSXAWRJC-UHFFFAOYSA-N 0.000 description 2
- XKGUKYPCHPHAJL-UHFFFAOYSA-N methanetetracarbonitrile Chemical compound N#CC(C#N)(C#N)C#N XKGUKYPCHPHAJL-UHFFFAOYSA-N 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910001961 silver nitrate Inorganic materials 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 description 1
- SFRZRFWPESUWKP-UHFFFAOYSA-N 2-bromopropanedinitrile Chemical compound N#CC(Br)C#N SFRZRFWPESUWKP-UHFFFAOYSA-N 0.000 description 1
- GAWAYYRQGQZKCR-UHFFFAOYSA-N 2-chloropropionic acid Chemical compound CC(Cl)C(O)=O GAWAYYRQGQZKCR-UHFFFAOYSA-N 0.000 description 1
- QEYMMOKECZBKAC-UHFFFAOYSA-N 3-chloropropanoic acid Chemical compound OC(=O)CCCl QEYMMOKECZBKAC-UHFFFAOYSA-N 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 238000006418 Brown reaction Methods 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 description 1
- 229940106681 chloroacetic acid Drugs 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- HFWIMJHBCIGYFH-UHFFFAOYSA-N cyanoform Chemical compound N#CC(C#N)C#N HFWIMJHBCIGYFH-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- KYUSWLIIGNEYCF-UHFFFAOYSA-N ethenylideneazanide Chemical compound [CH2-]C#N KYUSWLIIGNEYCF-UHFFFAOYSA-N 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- JCJYAQWMXFEKGR-UHFFFAOYSA-N methanetricarbonitrile;sodium Chemical compound [Na].N#CC(C#N)C#N JCJYAQWMXFEKGR-UHFFFAOYSA-N 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- CWHFDTWZHFRTAB-UHFFFAOYSA-N phenyl cyanate Chemical compound N#COC1=CC=CC=C1 CWHFDTWZHFRTAB-UHFFFAOYSA-N 0.000 description 1
- 229920000137 polyphosphoric acid Polymers 0.000 description 1
- 150000007519 polyprotic acids Polymers 0.000 description 1
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Inorganic materials [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 125000002577 pseudohalo group Chemical group 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/04—Preparation of carboxylic acid nitriles by reaction of cyanogen halides, e.g. ClCN, with organic compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/32—Separation; Purification; Stabilisation; Use of additives
Definitions
- the present invention relates to a process for the preparation of alkali metal or alkaline earth metal tricyanomethanides having a particularly high purity, in particular a high freedom from halides.
- Ionic liquids containing alkali or alkaline earth metal tricyanomethanides are important raw and auxiliary materials for the electrical industry, i.a. for the production of rechargeable batteries and electronic components.
- TCM alkali or alkaline earth metal tricyanomethanides
- MDN malononitrile
- Birckenbach et al. disclosed in Chem. Ber. 1929, 62B, 153 cyanidation of MDN with cyanogen bromide. Both Birckenbach et al. as well as Mayer et al. ⁇ Monatsh. Chem., 1969, 700, 462) have described the preparation of low-halogen silver tricyanomethanide by adding silver nitrate to crude alkali metal tricyanomethanide, first precipitating silver chloride or silver bromide. From the filtrate silver tricyanomethanide could be isolated after further addition of silver nitrate. Mayer et al.
- the resulting potassium tricyanomethanide was subsequently recrystallized twice from water. This gave a white crystalline powder which, upon excitation with light at 5145A, showed no Raman fluorescence background and was interpreted to be highly pure.
- the object of the present invention was to provide a simple and rapid process for the preparation of high purity tricyanomethanides.
- the process should be suitable for large-scale production.
- Claimed is a process for the preparation of alkali or Erdalkalitricyano- methanides in a purity of at least 99 wt .-% and a halide content of at most 20 ppm, wherein in a first step malononitrile in the presence of water and an acid by parallel addition of a cyanogen halide or dicyan, and an alkali metal base is converted to the corresponding alkali or alkaline earth metal tricyanomethanide and at least during the addition of the halogen or dicyan, a pH of 4.0 to 9.5, preferably from 6.4 to 7.7, most preferably from 7.0 to 7.6, and wherein the initially formed alkali or alkaline earth metal tricyanomethanide is recrystallized in a second step in another solvent.
- Essential features of the invention are the change of solvent between synthesis and purification, and the conditions in the reaction.
- the cyanidation is carried out in aqueous solution in a narrow pH range, whereby only a few by-products are formed, which can then be removed very efficiently with a recrystallization in a suitable organic solvent.
- the malononitrile is dissolved in water in the presence of a buffer system, wherein the preparation of the buffer system preferably by addition of an acid and subsequent adjustment of the pH with a base. Carrying out the reaction in the presence of a buffer system substantially facilitates the maintenance of a narrow pH range.
- the acid is selected from the group consisting of water-miscible organic and inorganic acids, water-wettable organic and inorganic poly acids and mixtures thereof.
- Suitable acids are selected from the group consisting of formic acid, acetic acid, chloroacetic acid, propionic acid, 2-chloropropionic acid, 3-chloropropionic acid, toluenesulfonic acid, phosphoric acid, sulfuric acid, hydrochloric acid, and nitric acid, acidic ion exchangers, polyphosphoric acid and heteropolyacids such as polymolybdic acid and polytungstic acids. Particular preference is given to using polybasic acids, very particularly preferably phosphoric acid. As the base in the buffer system, preferably the same base is used, which is added later in the reaction.
- cyanogen halide chlorine and cyanogen bromide can be used.
- Dicyan has by the presence of a pseudohalogen group comparable properties to chlorine and cyanogen bromide.
- the cyanogen halide or cyanogen is particularly preferably used in relation to malononitrile from 1: 1 to 10: 1, preferably from 1: 1: to 1: 3.
- An excess of cyanogen halide or cyanogen is particularly preferred.
- cyanogen chloride is used.
- the base in the process according to the invention contains at least one alkali metal or alkaline earth metal selected from the group consisting of lithium, sodium, potassium, magnesium, calcium or barium.
- alkali metal or alkaline earth metal selected from the group consisting of lithium, sodium, potassium, magnesium, calcium or barium.
- lithium and / or sodium are used.
- the alkali or alkaline earth metal base is particularly preferably a strong base.
- alkali metal or alkaline earth metal hydroxides, alkali metal or alkaline earth metal oxides or alkali metal or alkaline earth metal alkoxides can be used here.
- alkali or alkaline earth metal alkoxides in particular C 1-6 alkoxides can be used.
- the base is an alkali or alkaline earth metal hydroxide.
- the alkali metal tricyanomethanide initially formed has a halide content of up to 10% by weight in the process according to the invention after the first step. This solid can then be recrystallized in one step in another solvent, preferably in an organic solvent.
- the product can be obtained from the mixture, preferably after cooling, as a solid.
- Alkali or alkaline earth metal tricyanomethanides are hereby obtained with low halide contents, a high chemical purity and in good yields of 94% by weight, based on the crude alkali metal or alkaline earth metal tricyanomethanide used.
- the alkali metal or alkaline earth metal tricyanomethanide is initially dissolved, optionally at elevated temperature, in methyl ethyl ketone and / or methyl isobutyl ketone and, if appropriate, at a reduced temperature, precipitated.
- the alkali metal or alkaline earth metal tri cyanomethanid optionally after prior addition and separation of activated carbon, in the presence of methyl tert-butyl ether or diisopropyl ether precipitated.
- Recrystallization is particularly preferably carried out using the solvents acetone and methyl tert-butyl ether (MTBE).
- the recrystallization is carried out in a preferred process variant in the presence of a porous filter aid such as activated carbon, cellulose, cotton, diatomaceous earth or silica sol.
- a porous filter aid such as activated carbon, cellulose, cotton, diatomaceous earth or silica sol.
- the alkali metal or alkaline earth metal tricyano methanide is advantageously dissolved in the presence of the filter aid.
- the filter aid can also be added during the dissolution or after the solution has been obtained.
- the filter material is separated before the alkali or alkaline earth metal tricyanomethanide is precipitated.
- Activated carbon is particularly preferably used as a filter aid.
- the alkali or alkaline earth metal tricyanomethanide is precipitated at a temperature below 20 ° C, more preferably at 10 ° C or less.
- an alkali metal or alkaline earth metal tricyanomethanide is obtained in a purity of at least 99% by weight, preferably of at least 99.5% by weight, particularly preferably of at least 99.8% by weight , Very particular preference is given to obtaining alkali metal or alkaline earth metal tricyanomethanides having a purity of 99.9% by weight and more.
- the purity in% by weight is understood as the purity of the solvent-free alkali metal or alkaline earth metal tricyanomethanides.
- the corresponding alkali or alkaline earth metal tricyanomethanide can be recovered.
- mixed tricyanomethanides can also be obtained.
- Example 1 In a stirrer, malonodinitrile (462 g, 5.95 mol, 85% in methanol), water (2021 g) and phosphoric acid (57.1 g, 0.5 mol, 85% strength) are mixed. Subsequently, a pH of 7.5 is adjusted with sodium hydroxide solution (50% strength). At 25 to 30 ° C., cyanogen chloride (979 g, 15.92 mol) is metered in over the course of 2 hours, the pH being kept at 6.4 to 7.5 by controlled addition of sodium hydroxide solution (50% strength). It forms a beige to brown clear solution. After addition of the total amount of cyanogen chloride is the
- the pH is kept at 7.0 to 7.2 by controlled addition of sodium hydroxide solution (50% strength). Thereafter, a pH of 8.5 is adjusted with sodium hydroxide solution and 50 g of activated carbon are added to the reaction mixture. The resulting suspension is stirred at 25 to 30 ° C for a further 30 min and then filtered off. 4.17 kg of a yellowish solution of sodium tricyanomethanide in water containing 17.9% by weight of sodium tricyanomethane are obtained. In addition, 11.0 wt .-% of inorganic salts, 1.0 wt .-% methanol, 69.9 wt .-% water and 0.2 wt .-% of organic impurities are included. The yield of sodium tricyanomethanide based on the malonodinitrile used is 100%. The purity of the product is over 98.8 wt .-%.
- the wet product contains 2.6% by weight of sodium chloride, 24.0% by weight of water and 1.2% by weight of organic impurities.
- the purity of the product is about 98.8 wt .-%.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP07801696A EP2061752B1 (de) | 2006-08-16 | 2007-08-16 | Verfahren zur herstellung von alkali- oder erdalkalimetalltricyanomethaniden |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP06017027A EP1903029A1 (de) | 2006-08-16 | 2006-08-16 | Verfahren zur Herstellung von Alkali- oder Erdalkalimetalltricyanomethaniden |
| EP07801696A EP2061752B1 (de) | 2006-08-16 | 2007-08-16 | Verfahren zur herstellung von alkali- oder erdalkalimetalltricyanomethaniden |
| PCT/EP2007/007240 WO2008019852A1 (de) | 2006-08-16 | 2007-08-16 | Verfahren zur herstellung von alkali- oder erdalkalimetalltricyanomethaniden |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2061752A1 true EP2061752A1 (de) | 2009-05-27 |
| EP2061752B1 EP2061752B1 (de) | 2012-06-13 |
Family
ID=38123872
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06017027A Ceased EP1903029A1 (de) | 2006-08-16 | 2006-08-16 | Verfahren zur Herstellung von Alkali- oder Erdalkalimetalltricyanomethaniden |
| EP07801696A Not-in-force EP2061752B1 (de) | 2006-08-16 | 2007-08-16 | Verfahren zur herstellung von alkali- oder erdalkalimetalltricyanomethaniden |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06017027A Ceased EP1903029A1 (de) | 2006-08-16 | 2006-08-16 | Verfahren zur Herstellung von Alkali- oder Erdalkalimetalltricyanomethaniden |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US8022242B2 (de) |
| EP (2) | EP1903029A1 (de) |
| CN (1) | CN101528675B (de) |
| CA (1) | CA2662525C (de) |
| EA (1) | EA014710B1 (de) |
| ES (1) | ES2386079T3 (de) |
| WO (1) | WO2008019852A1 (de) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100057065A (ko) * | 2007-08-16 | 2010-05-28 | 론자 리미티드 | 알칼리 금속 및 알칼리 토금속 트리시아노메타니드의 제조 및 정제방법 |
| EP2674416A1 (de) | 2012-06-11 | 2013-12-18 | Lonza Ltd | Verfahren zur Herstellung von Alkalimetall und Erdalkalimetall-Tricyanomethaniden |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4823401B2 (ja) * | 1996-12-30 | 2011-11-24 | イドロ―ケベック | 過フッ化アミド塩及びイオン伝導物質としてのその使用方法 |
-
2006
- 2006-08-16 EP EP06017027A patent/EP1903029A1/de not_active Ceased
-
2007
- 2007-08-16 WO PCT/EP2007/007240 patent/WO2008019852A1/de not_active Ceased
- 2007-08-16 ES ES07801696T patent/ES2386079T3/es active Active
- 2007-08-16 EP EP07801696A patent/EP2061752B1/de not_active Not-in-force
- 2007-08-16 CN CN2007800385712A patent/CN101528675B/zh not_active Expired - Fee Related
- 2007-08-16 US US12/310,601 patent/US8022242B2/en not_active Expired - Fee Related
- 2007-08-16 EA EA200900305A patent/EA014710B1/ru not_active IP Right Cessation
- 2007-08-16 CA CA2662525A patent/CA2662525C/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008019852A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008019852A1 (de) | 2008-02-21 |
| CA2662525C (en) | 2013-11-05 |
| CN101528675A (zh) | 2009-09-09 |
| EP2061752B1 (de) | 2012-06-13 |
| ES2386079T3 (es) | 2012-08-08 |
| EA014710B1 (ru) | 2011-02-28 |
| EP1903029A1 (de) | 2008-03-26 |
| EA200900305A1 (ru) | 2009-08-28 |
| HK1137421A1 (en) | 2010-07-30 |
| CA2662525A1 (en) | 2008-02-21 |
| CN101528675B (zh) | 2012-11-21 |
| US8022242B2 (en) | 2011-09-20 |
| US20100094040A1 (en) | 2010-04-15 |
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